Used Bostitch N88RH framing nailer never used as a production tool as in framing crews etal. Original journeyman remodeling owner, lately gun didn't fire, pushrod extended but did not retract, then leaked air with rod extended, plus it would fire one round as soon as you plugged in the air line. So replaced trigger valve and O-rings, then it worked for a bit, until it didn't. So I bought a new one. Will be securely shipped in the Metabo framing gun box I bought to replace it.